.right {
    padding: 0 5px;
    text-align: center;
    color: #fff;
    font-size: 16px;
    margin-right: 400px;
float:right
}

.right:hover {
    background-color: rgb(97, 150, 230);
}

.left {
    padding: 0 5px;
    text-align: center;
    color: #fff;
    font-size: 16px;
    margin-left: 400px;
    float:left
}

.left:hover {
    background-color: rgb(97, 150, 230);
}

.leftest {
    padding: 0 5px;
    text-align: center;
    color: #fff;
    font-size: 16px;
    margin-left: 10px;
    float:left
}

.leftest:hover {
    background-color: rgb(97, 150, 230);
}

.site-layout {
    background: #fff;
}

.card {
    margin-top: 10px;
    margin-left: 100px;
    margin-right: 100px;
}